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Major QTL on chromosomes 9S affects silk maysin concentration in four populations


, : Major QTL on chromosomes 9S affects silk maysin concentration in four populations. Maize Genetics Cooperation Newsletter ( 71): 27-28

Quantitative trait locus (QTL) analysis of 4 maize populations (GT114 x GT119, GT114 x NC7A, GE37 x Mp464 and GE37 x FF8) detected a region on chromosome 9S significantly associated with concentration of maysin (a corn earworm (Helicoverpa zea) resistance factor). In each case the QTL displayed dominance to partial dominance for low maysin concentration.


Accession: 002889149

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Related references

Meyer, J.D.F.; Snook, M.E.; Houchins, K.E.; Rector, B.G.; Widstrom, N.W.; McMullen, M.D., 2007: Quantitative trait loci for maysin synthesis in maize (Zea mays L.) lines selected for high silk maysin content. Maysin is a naturally occurring C-glycosyl flavone found in maize (Zea mays L.) silk tissue that confers resistance to corn earworm (Helicoverpa zea, Boddie). Recently, two new maize populations were derived for high silk maysin. The two populati...

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Wiseman, B.R.; Widstrom, N.W.; McMillian, W.W.; Waiss, A.C.J., 1985: Relationship between maysin concentration in corn silk and corn earworm (Lepidoptera: Noctuidae) growth. During a study in the USA, significant differences were found among silks of maize with regard to both relative maysin concentration and larval weight of Heliothis zea. A decrease in maysin concentration was found in only 1 year of the test as the...

Wiseman B.R.; Widstrom N.W.; Mcmillian W.W.; Waiss A.C.Jr, 1985: Relationship between maysin concentration in corn zea mays cultivar zapalote chico silk and corn earworm heliothis zea lepidoptera noctuidae growth. Significant differences were found among silks of corn, Z. mays L., for both relative maysin [a flavone glycoside] concentration and corn earworm. H. zea (Boddie), larval weight. A decrease in maysin concentration was found in only one test year a...

Guo, B.Z.; Widstrom, N.W.; Wiseman, B.R.; Snook, M.E.; Lynch, R.E.; Plaisted, D., 1999: Comparison of silk maysin, antibiosis to corn earworm larvae (Lepidoptera: Noctuidae), and silk browning in crosses of dent x sweet corn. Sweet corn is one of the highest ranking vegetable crops in the United States in terms of both market value and total acreage; it also ranks among the top vegetable crops in terms of pesticide usage. Ear damage caused by insects is the most signif...

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Cooke, L., 1997: Maysin: a natural insecticide from corn silk. Agricultural research 45(6): 18